3/2*5/6+3/2:9/10-3/2*13/18
1)3/2*5/6=5/4 2)3/2:9/10=3/2*10/9=5/3 3)3/2*13/18=13/12 4)5/4+5/3-13/12=15/12+20/12-13/12=22/12=1 10/12